ABSTRACT
The T(EB4)Nta, T(IBj5)Nta, and T(B362i)NtA strains were constructed by introgressing the insertionaltranslocations EB4, IBj5, and B362i from Neurospora crassa into the related species N. tetrasperma. Theprogeny from crosses of T(IBj5)Nta and T(B362i)NtA with opposite mating-type derivatives of the standard N.tetrasperma strain 85 exhibited a unique and unprecedented transmission ratio distortion (TRD) that disfavoredhomokaryons produced following alternate segregation relative to those produced following adjacent-1 segregation. The TRD was not evident among the [mat A ? mat a] dikaryons produced following either segregation. Further, crosses of the T(IBj5)Nta and T(B362i)NtA strains with the Eight spore (E) mutant showed anunusual ascus phenotype called ‘max-4’. We propose that the TRD and the max-4 phenotype are manifestations of the same Bateson-Dobzhansky-Muller incompatibility (BDMI). Since the TRD selects against 2/3 ofthe homokaryotic progeny from each introgression cross, the BDMI would have enriched for the dikaryoticprogeny in the viable ascospores, and thus, paradoxically, facilitated the introgressions.
ABSTRACT
Memory function and learning process are commonly observed impaired among children with Attention Deficit Hyperactive Disorder (ADHD). However, children with Emotional Disorders (ED) too report inability to attend, register and recall the stimuli that eventually result in poor academic performance. The present study aimed to study the nature of impairment in verbal learning and memory function among children with ADHD and ED. The study further aimed to explore the effect of severity of illnesses over the degree of impairment in verbal learning and memory function in both the groups. Twenty children meeting the ICD-10 criteria for ADHD and twenty children meeting the ICD-10 criteria under F-93 for Emotional Disorders (ED) were assessed on the measure of verbal learning & memory and compared with twenty age and education matched normal control group. Children with ADHD and ED performed poorly on the measure of verbal learning and memory in comparison of normal control, but the degree of impairment was observed relatively higher among ADHD children than children with ED. However, severity of illness was not observed a contributory factor for the impairment in verbal learning and memory function in both the groups. Impairment in verbal learning and memory function is not confined only to the children with ADHD but these are now recognizable among children with Emotional Disorders too. Both the groups (Children with ADHD and ED) reflected impaired memory and learning function but in terms of degree of impairment the children with ADHD were always found standing towards higher side than children with emotional disorder.
ABSTRACT
Objectives: Perceived self-efficacy is a belief centers on appraisal vs. misappraisal of capabilities within the individual to produce designated level of performance. It mediates the relationship between functional decline, health condition and the need for formal care services. The present stduy aimed to study the impact of perceived self efficacy on mental health and to explore the predictor of mental health among elderly population. Method: The study consisted of 160 elderly respondents. Half of these were males and the other half females. They were further sub-divided into eight groups on the basis of their gender and age. Each of eight subgroups consisted of 20 respondents and assessed on the measures of Perceived Self Efficacy (PSE) and Mental Health i.e. General Health Questionnaire (GHQ). Results: The mean differences showed that the elderly males scored higher on the measure of PSE and GHQ and showed better meatal health than elderly females. Again the younger elderly groups scored higher on the measures of PSE and GHQ and reported better mental health than the elderly of advanced age groups. Conclusion: The present study revealed that the problem of elderly is emerging not only due to their increasing proportion of age but also due to their own faulty cognitions and perceptionof aging. Perceived self efficacy emerged as an imjportant predictor of mental health among elderly males and females i.e. elderly who perceive themselves self efficacious to have control over their environment reported better mental health and vice versa.